Feed-water heater



(No Model.) 7

J. J. HOPPES}.

EEEE WATER HEATER.

No. 273,084. Patented Peb.2'7,1883.

ATTORNEYS,

n. PETERS. Pholvl-flhugrapb'. wumm m:

lJNlTED STATES PATENT OFFICE.

JOHN J. HOPPES, OF SPRINGFIELD, OHIO.

FEED-WATER H EATER.

SPECIFICATION forming part of Letters Patent No. 273,084, dated February 27, 1883.

Application filed June 6, 1882. (No model.)

To all whom it may concern Be it known that 1, JOHN J. HOPPES, of

' Springfield, in the county of Clarke and State of Ohio, haveinvented a new and useful Iniprovement in Feed-Water Heaters, of which the following is a full, clear, and exact description.

My improvements relate to apparatus for heating and filtering the feed-water of boilers and extracting the lime and other foreign matters therefrom.

The invention consists in certain essential features of construction hereinafter described and claimed.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar letters of reference indicate corresponding parts in all the figures.

Figure 1 is a vertical section of my improved feed-water heater. Fig. 2 is a transverse section on line a; a; of Fig. 1. Fig. 3 is a crosssection' on line y y of Fig. 1. Fig. 4 is a sectional elevation of the lower portion of the apparatus at right angles to Fig. l, and showing thedischarge-pipe and filter; and Fig. 5 is a detail view.

A is a hollow cylinder of metal, of suitable diameter and length, and fitted with cast-iron heads a a.

At the center of the cylinder A is a shaft,b, that is stepped at its lower end in a crossbrace, o, and supported at its upper end by a cross-brace, c. This shaft is provided at its lower end with a beveled pinion gearing into a similar pinion upon the end of a shaft, a, that extends to the outside through a stuffingbox in the side of the cylinder A, and this shaft dis provided with a crank-handle for its rotation to give rotation to the shaft 1), and in apparatus of large size the cross-shaft may be provided with a pulley for receiving abelt, so that the shaft 1) may be rotated by power.

Fixed upon the shaft 12 are the bowl-shaped receivers B,-of concave-convex form, their diameter at'their upper edges bein g somewhat smaller than the interior of the cylinder A, so as to give free spacefor the escape of the water.

D D are the scrapers, the same being narrow blades of metal shaped to the form of the bowls B on both their lower and upper edges. These scrapers are connected at their outer ends to a vertical rod or shaft, 6, which extends through the cylinder A atone side. They are also connected by bracesjl at their outer ends to a second shaft, 9, that extends through the cylinder at one side of and at a suitable distance from the rod 0, the object of this brace and second shaft being to prevent the scrapers from turning. The rod (3 is sustained at intervals by eyes h, attached to the side of the cylinder A, and the two rods are connected at both their upper and lower ends by curved bars i i. The lower connectingbar, 2', is slotted to receive the end of a jointed link, K, by which the bar is connected to an arm on a shaft, '1, which shaft is supported in a horizontal positionand extends through a stuffing-box in the side of the cylinder A, its outer end being provided with a lever, m, by which the shaft can be turned in either direction, and the two rods 6 g, with the scrapers, thus raised and lowered.

The feed-water-supply. pipe at enters at the upper part of the cylinder A in position for discharging into the upper bowl or receiver, B. Near the bottom of the cylinder is a pipe, 0, for drawing water from the lower part of the cylinder, which may be done'by means of a pump. Over the opening into the dischargepipe 0, and within the cylinder, is fixed a filtering-box,p, formed with perforated side plates, between which is contained any suitable filtering medium. The space beneath the lower bowl. B and the bottom of the cylinder A forms a reservoir for receiving the heated water which is to be drawn from it by the pipeo.

At one side of the cylinder A, and near the bottom, is an inlet-opening, q, provided with a coupling for the connection of the exhauststeam pipe, and this opening is covered at the side by a curved or concave plate, 1*, this plate being open at its side to allow exitof the steam.

In the bottom head of the cylinder A is a waste-pipe, 3, provided with a valve, 15, that is fitted for being opened by hand when the apparatus is to be cleaned. The cylinder is also provided with a door, it, near its lower end, for giving access to the interior.

In the operation of the apparatus the feedwater supplied by the pipe n fills the upper bowl or receiver B,.and, flowing over the upper edges of the same, falls into the second bowl, and so on until they are all filled and the water passes to the receiving-space at the bottom of the cylinder. The bowls are of such form that the water flowing over their edges clings to their under sides until near the middle or center of the bowl. The water is thus discharged directly into the bowl beneath, and being spread over the surface is more readily heated. The exhaust-steam, entering at q, fills the interior of the cylinder and retains the bowls in a heated condition. In this manner the water may be heated to any extent desired. The lime and other impurities contained in the Water will settle, and the receivers B will retain such impurities.

To clean the apparatus the Waste-valve t is to be opened, the shaft at given a few rapid turns, and the shat'tb,with the bowls, beingthus rotated, the water and loose material will be thrown out from the bowls by centrifugal action. During this operation the scrapers D are to be raised to their highest position, after which by turning the lever m, the scrapers are to be brought down within the bowls, which being set in rotation, the material adhering to the inner surface of the bowl is scraped off. The lever will be then turned in the opposite direction to raise the scrapers into contact with the under sides of the bowls in order to scrape the adhering material therefrom. Water is to be supplied at the top to fill the bowls, and they are again emptied by turning the shaft (1, and this is to be done rel peatedly until only clear water comes from the waste-pipe. The apparatus is thus cleaned without removing any of its parts, and the operation can be very quickly performed. The door to is to be removed when it is necessary to renew the filter p. The water being heated as it runs over the bowls B and flows on or clings to their under sides by direct contact with the ascending current of heat or steam, there is no loss of heat, as would occur from heating the water through a sheet of metal and the lime and impurities constantly being deposited thereon.

Having thus described my invention, Iclaim as new and desire to secure by Letters Patent- 1. In feed-water heaters, the combination, with cylinder A, of the receivers B, sustained upon thesbaft b, that is fitted for rotation within the cylindrical casing A, substantially as described.

2: In feed water heaters, the adjustable scrapers D, in combination with the bowlshaped receivers B, substantially as described.

"3. In feed-water heaters, the combination of the scrapers D, the rods 6 g, and the shaft 1, provided with a handle for its movementto raise and lower the rods and scrapers, substantially as shown and described.

JOHN J. HOPPES.

\Vi messes:

HENRY VoLL, W. G. ARMSTRONG. 

